Added base options

mediapipe/tasks/ios/core/BUILD

@@ -0,0 +1,33 @@
+# Copyright 2022 The MediaPipe Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+package(default_visibility = ["//mediapipe/tasks:internal"])
+
+licenses(["notice"])
+
+objc_library(
+    name = "MPPExternalFile",
+    srcs = ["sources/MPPExternalFile.m"],
+    hdrs = ["sources/MPPExternalFile.h"],
+)
+
+objc_library(
+    name = "MPPBaseOptions",
+    srcs = ["sources/MPPBaseOptions.m"],
+    hdrs = ["sources/MPPBaseOptions.h"],
+    deps = [
+        ":MPPExternalFile",
+
+    ],
+)

mediapipe/tasks/ios/core/sources/MPPBaseOptions.h

@@ -0,0 +1,51 @@
+/* Copyright 2022 The TensorFlow Authors. All Rights Reserved.
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+ http://www.apache.org/licenses/LICENSE-2.0
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ ==============================================================================*/
+#import <Foundation/Foundation.h>
+#import "mediapipe/tasks/ios/core/sources/MPPExternalFile.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * MediaPipe Tasks delegate.
+ */
+typedef NS_ENUM(NSUInteger, MPPDelegate) {
+
+  /** CPU. */
+  MPPDelegateCPU,
+
+  /** GPU. */
+  MPPDelegateGPU
+} NS_SWIFT_NAME(Delegate);
+
+/**
+ * Holds the base options that is used for creation of any type of task. It has fields with
+ * important information acceleration configuration, TFLite model source etc.
+ */
+NS_SWIFT_NAME(BaseOptions)
+@interface MPPBaseOptions : NSObject <NSCopying>
+
+/**
+ * The external model file, as a single standalone TFLite file. It could be packed with TFLite Model
+ * Metadata[1] and associated files if exist. Fail to provide the necessary metadata and associated
+ * files might result in errors.
+ */
+@property(nonatomic, copy) MPPExternalFile *modelAssetFile;
+
+/**
+ * device delegate to run the MediaPipe pipeline. If the delegate is not set, the default
+ * delegate CPU is used.
+ */
+@property(nonatomic) MPPDelegate delegate;
+
+@end
+
+NS_ASSUME_NONNULL_END

mediapipe/tasks/ios/core/sources/MPPBaseOptions.m

@@ -0,0 +1,36 @@
+/* Copyright 2022 The TensorFlow Authors. All Rights Reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ ==============================================================================*/
+#import "mediapipe/tasks/ios/core/sources/MPPBaseOptions.h"
+
+@implementation MPPBaseOptions
+
+- (instancetype)init {
+  self = [super init];
+  if (self) {
+    self.modelAssetFile = [[MPPExternalFile alloc] init];
+  }
+  return self;
+}
+
+- (id)copyWithZone:(NSZone *)zone {
+  MPPBaseOptions *baseOptions = [[MPPBaseOptions alloc] init];
+
+  baseOptions.modelAssetFile = self.modelAssetFile;
+  baseOptions.delegate = self.delegate;
+
+  return baseOptions;
+}
+
+@end

mediapipe/tasks/ios/core/sources/MPPExternalFile.h

@@ -0,0 +1,28 @@
+/* Copyright 2022 The TensorFlow Authors. All Rights Reserved.
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+ http://www.apache.org/licenses/LICENSE-2.0
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ ==============================================================================*/
+#import <Foundation/Foundation.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ * Holds information about an external file.
+ */
+NS_SWIFT_NAME(ExternalFile)
+@interface MPPExternalFile : NSObject <NSCopying>
+
+/** Path to the file in bundle. */
+@property(nonatomic, copy) NSString *filePath;
+/// Add provision for other sources in future.
+
+@end
+
+NS_ASSUME_NONNULL_END

mediapipe/tasks/ios/core/sources/MPPExternalFile.m

@@ -0,0 +1,27 @@
+/* Copyright 2022 The TensorFlow Authors. All Rights Reserved.
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ ==============================================================================*/
+#import "mediapipe/tasks/ios/core/sources/MPPExternalFile.h"
+
+@implementation MPPExternalFile
+
+- (id)copyWithZone:(NSZone *)zone {
+  MPPExternalFile *externalFile = [[MPPExternalFile alloc] init];
+
+  externalFile.filePath = self.filePath;
+
+  return externalFile;
+}
+
+@end